MorphAnalyzer.analyze cannot parse numbers

[abhi-kr-2100]

Here's an example run along with INFO logs demonstrating the problem:

In [1]: import zeyrek

In [2]: ma = zeyrek.MorphAnalyzer()

In [3]: ma.analyze("3'te okuldaydım.")
APPENDING RESULT: <(okul_Noun)(-)(okul:noun_S + a3sg_S + pnon_S + da:loc_ST + nounZeroDeriv_S + nVerb_S + ydı:nPast_S + m:nA1sg_ST)>
APPENDING RESULT: <(._Punc)(-)(.:puncRoot_ST)>
Out[3]:
[[Parse(word='3te', lemma='Unk', pos='Unk', morphemes='Unk', formatted='Unk')],
 [],
 [Parse(word='okuldaydım', lemma='okul', pos='Verb', morphemes=['Noun', 'A3sg', 'Loc', 'Zero', 'Verb', 'Past', 'A1sg'], formatted='[okul:Noun] okul:Noun+A3sg+da:Loc|Zero→Verb+ydı:Past+m:A1sg')],
 [Parse(word='.', lemma='.', pos='Punc', morphemes=['Punc'], formatted='[.:Punc] .:Punc')]]